Stovebolt guides are 5/8" in diameter- - - -0.5625". I have a 7/16" drill bit with the first 3/4" ground down to 11/32" to use to thin the guides and stay on center. My calculator must be broke. It says 5/8" = 0.625"
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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